Ethereum Fusaka Upgrade Scheduled for December 2025

TLDR

• Fusaka upgrade increases throughput from 45M to 150M gas per block.
• Institutions like Fidelity express positive views on the upgrade.
• A $2 million bug bounty has been initiated for security improvements.

The Ethereum Fusaka upgrade is scheduled for deployment on December 3, 2025. It includes key Ethereum developers and the Ethereum Foundation community. The upgrade, a combination of enhancements to Ethereum’s consensus and execution layers, aims to improve the scalability and cost-efficiency of the Ethereum network.

Vitalik Buterin and other Ethereum leaders are central to these upgrades. Fidelity Digital Assets has noted the upgrade’s strategic, economically coherent nature. SwissBorg has highlighted that the upgrade could temporarily affect ETH and ERC-20 token operations.

Introduction of New Scalability Features

The Fusaka upgrade incorporates 12 Ethereum Improvement Proposals (EIPs), focused on enhancing Ethereum’s throughput. Throughput capacity is expected to increase from 45 million to 150 million gas per block. New mechanisms like PeerDAS are introduced to improve data verification efficiency.

These upgrades will benefit Layer 2 rollups, lower fees, and potentially boost ETH’s value through increased network usage. While institutions like Fidelity express positive views, community sentiment remains hopeful, demonstrated by active GitHub repository engagement.

Economic and Network Impacts

The Fusaka upgrade may have significant economic implications for Ethereum’s ecosystem, especially for Layer 1 and Layer 2 tokens. Expected outcomes include increased Total Value Locked (TVL) and reduced transaction fees. Staking flows for ETH validators may improve with reduced bandwidth requirements.

Historical precedence suggests upgrades like The Merge and Dencun led to greater adoption and bullish sentiments. The focus on scalability and value accrual with Fusaka indicates a strategic alignment of Ethereum’s roadmap, making it a pivotal event.

Community and Institutional Engagement

Institutions such as SwissBorg are preparing for possible operational impacts during the network transition. Fidelity’s report highlights the strategic nature of the upgrade, signaling potential institutional interest. The Fusaka upgrade has also initiated a $2 million bug bounty for security improvements.

No direct regulatory statements have been made regarding Fusaka. However, with ongoing preparatory phases and testing, community sentiment is positive, fostering proactive engagement and development activities.

“The most bullish upgrade ever,” says Kira Sama regarding Fusaka’s expected fee economics improvements.

Kira Sama

For a deeper understanding of Ethereum’s structural changes and Proof of Stake dynamics, you can review more about Proof of Stake (PoS).